<template>
	<div class="search-wrapper">
		<div class="search">
			<input class="search-input" v-model="keyword" type="text" placeholder="请输入城市名或拼音" />
		</div>
		<div class="search-content" ref="content" v-show="keyword">
			<ul>
				<li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
				<li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
			</ul>
		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  methods: {
    handleCityClick (city) {
      // 数据联动改变
      // this.$store.commit('changeCity', city)
      this.changeCity(city)
      // 回到首页
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  updated () {
    this.scroll = new Bscroll(this.$refs.content, {
      click: true
    })
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.search-wrapper
	.search
		height: .72rem
		padding: 0 .1rem
		background: $bgColor
		.search-input
			width: 100%
			height: .6rem
			line-height: .6rem
			box-sizing: border-box
			text-align: center
			border-radius: .06rem
			color: #666
	.search-content
		z-index: 1
		overflow: hidden
		position: absolute
		top: 1.58rem
		left: 0
		right: 0
		bottom: 0
		background: #eee
		.search-item
			line-height: .62rem
			padding-left: .2rem
			background: #fff
			color: #666
</style>
